(19)
(11) EP 0 548 032 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
28.07.1993 Bulletin 1993/30

(43) Date of publication A2:
23.06.1993 Bulletin 1993/25

(21) Application number: 92830665.3

(22) Date of filing: 10.12.1992
(51) International Patent Classification (IPC)5: H01J 37/32, C23C 14/32
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IT LI NL PT SE

(30) Priority: 13.12.1991 IT BS910137

(71) Applicant: UNICOAT S.r.l.
I-24060 Pianico, Bergamo (IT)

(72) Inventor:
  • Belletti, Manuela
    I-24060 Pianico, Bergamo (IT)

(74) Representative: Manzoni, Alessandro 
MANZONI & MANZONI, UFFICIO INTERNAZIONALE BREVETTI, P.le Arnaldo n. 2
I-25021 Brescia
I-25021 Brescia (IT)


(56) References cited: : 
   
       


    (54) Electric arc evaporator


    (57) The present invention relates to an electric arc evaporator including an anode (1), a support (2) for the part to be coated, a cathode group with a disc -shaped cathode to be evaporated (3), a current-carrier (4) and a main screen (5), that surrounds the periphery of the cathode (3). The height of the cathode (3) is inferior at least four times to its diameter, the current-carrier (4) is bucket-shaped and is in electrical contact with the non- evaporating surface of the cathode (3) and in that the cathode and the current-carrier are surrounded by an additional magnetic screen.






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